In this video, I give an overview of all the Maths Skills that you need for AQA A Level Biology. Please leave a comment if you have any questions or requests for future videos!!! :)
00:58 = Using appropriate units 04:36 = Standard Form 08:18 = Ratios, fractions and percentages (percentage change) 13:13 = Using scales to measure 15:46 = Estimating bacteria grown over a certain length of time 19:11 = Significant figures 21:46 = Chance vs probability 24:20 = Mean, median and mode 25:20 = Scatter graphs to identify correlation 26:19 = Magnification formula (changing subject of an equation) 28:05 = Selecting a statistical test 29:09 = Student's t test 33:54 = Correlation coefficient 39:57 = Standard deviation 42:24 = Percentage uncertainty/error 42:52 = Symbols that you need to know 44:21 = Circumference and area of a circle 44:54 = Surface area and volume (+ SA:V) of triangular prisms, cylinders, and spheres)
hiya I love your youtube videos theyre so useful in my revision I just wanted to ask are you going to make videos for the other required practicals? :))
Hi there, for the magnification question using the scale bars, i have watched several videos and they all say u dont need to measure the organelle, they say u measure the scale bar and then convert it to units given and use the magnification question as usual.
At 38:40 in my booklet that we use in school says the formula is 1 - {6x sum of d^2, every thing in bracket over n^3 - n] obviously in my exam ill use this cuz this is what they tought us but i dont know if you'll get the same answer for the same question. Edit: just to be sure the title of this equation is called spearman rank correlation test
Hi, I did not go through the chi-square test just so the video wasn't ultra-long. I go through it in detail in my "Inheritance" video, which should be linked in the corner of the video! :)
![AQA A-Level Biology June 2017 Paper 1 [Walkthrough, Tutorial, and Exam Technique]](http://i.ytimg.com/vi/sH-H2B25bEA/mqdefault.jpg)
![AQA A-Level Biology June 2017 Paper 1 [Walkthrough, Tutorial, and Exam Technique]](/img/tr.png)
00:58 = Using appropriate units
04:36 = Standard Form
08:18 = Ratios, fractions and percentages (percentage change)
13:13 = Using scales to measure
15:46 = Estimating bacteria grown over a certain length of time
19:11 = Significant figures
21:46 = Chance vs probability
24:20 = Mean, median and mode
25:20 = Scatter graphs to identify correlation
26:19 = Magnification formula (changing subject of an equation)
28:05 = Selecting a statistical test
29:09 = Student's t test
33:54 = Correlation coefficient
39:57 = Standard deviation
42:24 = Percentage uncertainty/error
42:52 = Symbols that you need to know
44:21 = Circumference and area of a circle
44:54 = Surface area and volume (+ SA:V) of triangular prisms, cylinders, and spheres)
Thank you for all your videos, they are ever so helpful. U deserve so much more subscribers!!!
hiya I love your youtube videos theyre so useful in my revision I just wanted to ask are you going to make videos for the other required practicals? :))
thank you
Hi there, for the magnification question using the scale bars, i have watched several videos and they all say u dont need to measure the organelle, they say u measure the scale bar and then convert it to units given and use the magnification question as usual.
That's right - you don't really need to measure the organelle - I just do it because I like making my life difficult :)
I have my wjec as biology today! fingers crossed 🤞
I hope it went well!
So is this sufficient for the maths questions present in aqa biology
At 38:40 in my booklet that we use in school says the formula is 1 - {6x sum of d^2, every thing in bracket over n^3 - n] obviously in my exam ill use this cuz this is what they tought us but i dont know if you'll get the same answer for the same question.
Edit: just to be sure the title of this equation is called spearman rank correlation test
Yeah that's alright to use 😊
At 3.03 I think you meant that you multiply by 1000 to go from cm^3 to mm^3, as mm^3 is the smaller unit. Great video otherwise
Yes I meant that! I say the wrong word sometimes, although I do know it! Thanks for pointing that out! X
Hi, do we need to memorise the equations for student t test and correlation coffecient? I know we dont cor chi squared!
No :)
@@AlevelBiologyHelp ooh phewww
Can i use this for ial edexcel biology?
Yes I don't see why not, it's just maths skills so it should apply to other exam boards. :)
33:45 don’t u reject null hypothesis when the p value (the t value) is less than critical value
SAME thats what i thought
you reject null hypothesis when value for t exceeds critical value
Did you not go through Chi-square test
Hi, I did not go through the chi-square test just so the video wasn't ultra-long. I go through it in detail in my "Inheritance" video, which should be linked in the corner of the video! :)
@@AlevelBiologyHelp ok thank you! im just going through all the the statisitcal tests, havent done inheritance yet
thank you